中国电力 ›› 2014, Vol. 47 ›› Issue (2): 78-83.DOI: 10.11930/j.issn.1004-9649.2014.2.78.5

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1 000 kV与500 kV交流同塔四回线路带电作业电场防护仿真计算分析

苏梓铭, 彭勇, 刘凯, 刘庭, 肖宾, 吴田, 唐盼   

  1. 中国电力科学研究院,湖北 武汉 430074
  • 收稿日期:2013-12-17 出版日期:2014-02-28 发布日期:2015-12-18
  • 作者简介:苏梓铭(1986-),男,湖北武汉人,工程师,从事输电线路维护、带电作业技术研究。E-mail: suziming@epri.sgcc.com.cn

Simulation Analysis of Electric Field Protection for Live-Working on 1 000 kV and 500 kV AC Four-Circuit Transmission Lines on One Tower

SU Zi-ming, PENG Yong, LIU Kai, LIU Ting, XIAO Bin, WU Tian, TANG Pan   

  1. China Electric Power Research Institute, Wuhan 430074, China
  • Received:2013-12-17 Online:2014-02-28 Published:2015-12-18

摘要: 1 000 kV与500 kV交流同塔四回输电线路与单一电压等级超(特)高压线路的空间电场分布具有较大区别,线路带电作业电场环境更为复杂。为此,采用工频电场的三维边界元法仿真计算分析同塔四回线路带电作业场强分布特点,建立人体模型,计算分析等电位和地电位典型作业工况下人体不同部位的电场强度特点,进而确定该特殊塔形线路带电作业人员安全防护措施。结果表明,等电位作业人员需身穿屏蔽效率为60 dB的屏蔽服,并佩戴屏蔽效率不低于20 dB的屏蔽面罩,地电位作业人员穿戴常规屏蔽服或静电防护服,能够满足作业人员安全防护的要求。

关键词: 带电作业, 同塔四回, 交流线路, 电场防护, 仿真

Abstract: Electric field distribution of 1 000 kV and 500 kV AC four-circuit lines on one tower is quite different from that of single-voltage EHV/UHV transmission lines and electric field for live-working becomes more complicated. The field intensity distribution for live-working is simulated in this paper with 3D boundary element method of power frequency electric field and a human body model is established for analyzing the electric field intensity of the human body in different parts in the typical operating conditions including ground potential and equipotential, based on which the electric field protection measures for the live-workers are determined. It is concluded that the safety protection requirements can be met for the equipotential workers who wear screening clothes with 60 dB screen efficiency and screening helmet with 20 dB screen efficiency, and for the ground potential workers who wear conventional screening clothes or electrostatic shielding clothes.

Key words: live-working, four-circuit on one tower, AC transmission line, electric field protection, simulation

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